Line simplification in pmtiles is too aggressive

[dabreegster]

York geojson, near Holgate: pmtiles using current settings: pmtiles using --no-line-simplification or --simplify-only-low-zooms:

[Robinlovelace]

Doesn't look too bad to me. Also: I would suggest --visvalingam which generates slightly nicer results in my limited experience comparing it with the default Douglas-P algorithm: https://github.com/felt/tippecanoe#line-and-polygon-simplification